铁路路基是承受并传递轨道重力及列车动态作用的结构，是轨道的基础，是保证列车运行的重要建筑物。路基是一种土石结构，处于各种地形地貌、地质、水文和气候环境中，有时还遭受各种灾害，如洪水、泥石流、崩塌、地震等。
The stability of railway roadbed is an essential problem when researching railway construction technique in permafrost area of the plateau.
铁路路基的稳定性,是高原多年冻土地区铁路修筑技术研究的核心。
参考来源 - 青藏高原多年冻土区铁路路基热稳定性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
这项包含铁路路基、桥梁、涵洞、护坡的工程就交到了东乡人团队的手中。
The project was handed to the team from Dongxiang and included railway beds and Bridges, culverts and slope protection.
部分人甚至还认为经济增长本身就是一个问题——这也是他们反对斯图加特一个大型铁路基础设施工程的原因之一。
Some of them still talk as if economic growth were a problem in itself-which is one reason they opposed the huge infrastructure project at Stuttgart's railway station.
50年前由当时新兴的非洲独立国家继承下来的公路铁路基础设施，现在很大一部分都已经年久失修。
A large part of the road and rail infrastructure inherited by newly independent African countries about 50 years ago has fallen into disrepair.
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